beloit



June 11, 1929.

A. ALDRICH ET AL STEAM FITTING Filed July 19, 1926 Patented June 11, 1929.

UNITED STATES PATENT OFFICE.

ALONZO ALDRICH AND EARL E. BERRY, O33 BELOI'I, WISCONSIN, ASSIGNORS TO BELOIT IRON WORKS, OF IBELOIT, WISCONSIN, A CORPORATION OF WISCONSIN.

STEAM FITTING.

Application. filed July 19,

This invention relates to steam fittings especially designed and adapted for application to the end of a hollow rotating body such, for example, as the ournal of a drying cylinder used in a paper making machine, and in certain respects is an improvement on our applications for U. S. Letters Patent, Serial Nos. 751,941, 751,942 and 751,943, filed Nov. 2st, 1924.

In said prior applications steam littings of this type are disclosed embodying certain novel features whereby a low friction, steam tight joint is automatically main tained between the rotating journal and the non-rotating steam supply fitting. In each case the structure employs a stationary part or support against which is taken the thrust of the steam pressure tending to unseat the steam fitting. In each case also the steam fitting includes a condensate return or outlet pipe lined in the fitting. Said applications further disclose and claim broadly'an expansible metal bellows or sylphon in the steam supply conduit functioning to automa tically maintain a low friction, steam tight joint regardless of variations in steam pres sure and to allow for certain displacements of the steam supply fitting and piping incidental to expansion and contraction of the parts.

The present invention aims to utilize our prior inventions without use of the stationary support against which the steam thrust was taken, and to this end comprchends broadly a team supply fitting having one or more steam oints of the sylphon-backing type and including means secured to the rotating journal or cylinder for taking the steam thrust. As a result, the steam fitting is maintained in operative relation to the rotating journal by means directly associated with the journal as distinguished from being dependent upon extraneous means. This makes for greater practicability and eliminates outside contingencies such, for example, as the problem of maintaining the thrust resisting support in a stationary position.

Another purpose is to provide a steam fitting of the character described which is auton'iatically balanced in the sense that the joints bctwen the rotating and non-rotating parts are maintained in steam tight, low friction contact regardless of variation. of the pressure.

alanine: purpese to rovide a navel con 1926. Serial No. 123,898.

densate outlet or return, characterized by a condensate outlet pipe secured to the rotating journal and serving as the prime means for maintaining the steam supply and condensate outlet fittingsin operative relation to the journal. By holding the parts in this relation the condensate pipe serves to resist the pressure of the steam tending to unseat the steam fitting from the journal. In this regard we have provided an adjustment in connection with the condensate return pipe whereby the pressure on the steam joints may be varied or adjustment may be made for take up of wear.

A further object is to provide a simple and practical construction of the character described which may be readily applied to any cylinder journal and which will serve 111 a practical and satisfactory manner the purposes intended.

Our invention further contemplates broadly the provision of a rotating and a nonrotating conduit held, one seated against the other, by a part secured to the rotating conduit and extending through the non-rotating conduit and acting against the latter through the intermediary of a sylphon. This organization preferably, but not necessarily, includes a second sylphon backing one of the bearing members in the joint between the conduits.

Other objects and attendant advantages will be appreciated by those skilled in this art as the invention becomes better understood by reference to the following description when considered in connection with the accompanying drawin The figure is a fragmentary, longitudinal vertical section through a steam-fitting embodying our invention showing its application to a hollow rotating journal or trunnion.

In this case only a small portion 2 of one end of a drying cylinder is shown and the trunnion or journal 3 on said end is shortened, it being manifest that the journal revolves in a suitable bearing, not shown. To the end of this ournal or rotating conduit is applied the steam fitting or non-rotating conduit, in this instance a supplemental part l being secured by bolts 5 to the end of the journal, this supplemental part providing a retating bearing face 6. Against this bearing face is seated a bearin disk 7, preferably of some uit 1e com'positlon such, for example,

impregnate with hearing disk sea.

Ill

(ill

all!

sible, metal]. hollows known as a sylphon,

ilesignnled by ll), preferably 'lorinedol? copper, which in turn is securei'l by similar chnnps ll lo one end of a non-rotating at run supply conduit 12. 'lhe hearing; dis; 7 is retained from (lisphuceincnt by a illange 13 on the rotating part 1- and the flat surface 1 1: hetwoen the parts 7 and 8 permit a certain amount o l play in, a \erl'ical plane between the slcain lilting; and the journal occasioned by expansion and contraction of pipes. liteaui is supplied to the conduit 12 by a vertial pipe l Whicln together with. a ertieal iioiulcnsale outlet pipe described late sup ports the titling; The Hififllli lilting;insoiu'ras the steam inlelf-Function thereof concerned, is completed in this instance 7y u condensate outlet or return pipe 16 extending thrrnigh the eouduit 12 and seeureil at 1.7 to the rotating; journal or cylinder, in this instance through the ageney oil? a bracket 8 bolted to the latter a nd a sl an] joint or litliinp; between the ouler end ol this pipe and the end of the conduit remote from the journal. ()n the outer end of said pipe 16 is adjust: hly secured a hearing part 19 against which is snotcd :i hearing disk 21. A non-rotating bearing part seats against the hearing disk 21 and secured to one end of a sylphon the opposite end of which is secured to a flange 2% on the conduit 12, the sylphon being clamped at its end to the contiguous parts; in. the same manner as the sylphon The part 1:) is threaded. on the pipe 16 and, thcrelore, may be {llljllSliNl longitudinally thereon for the purpose o'l putting all oi the parts between the journa pert -71- and th port 1;) under i-din'ht eoniprrmiion whereby the sylphons will yiolllin gly hold the hearing}; 'n rts in contact. l y nurans i a lock nut ill the bourinn part l9 may be secured in any adjusted position. The ports thus 'lar (lescrilwl complete and co mprise vhat may be termed a si'euni lilting in the sense that they provide a complete structure applicable to the journal :lior supplying slmini thereto. ilhe part 16 need not, necessarily, be in. the form oil a pipe since it l'unctions to hold tin steam lilting in ope atire relation to the journal andlio resist the thrust of the stczun pressure tending to unseat the steam titling from the journal. An :uhlitional lunelion is perlornuu'l by making;

this part ll: in the tl'orin of a condensate outend llurreol or in sneh n'ninner or ;o connect with lhoonn r end of the retnrnpipe 16 to carry away the discharging condensate. It will be further observed that in the present (}ll'll)()llill@1lll()li our invention apertil'ion is providedbetween the interior oi? the steam supply and eondcnszte outlet fittings coniprising the pipe 16 and parts 19, 21., 22 and 23 which include a sleain joint the neurotaling part oliwhieh is backed by sylphon.

in operation the eyliinler 2 relates and inosinuch us the condensate ullet plllr? 16 is seeureil to the cylinder this pipe, together Willi. the part 19 rol'a l'es. fl t- Will be apparent, therel'ole lhat there are two joints haying rotating and non-rolailing parts, one joint being at each end o l the steam sup iily lit ling; and earl such joint having a non-retail g part hacked by or responsi re to ihe a tion of a sylphon. Steam is supplied, to the revolving iisylinder through lhe fitting deserihed above :1 ml the coni'lei'isal e on Hun-ed from the interior of the cylinder, by any suil'uhh ineans well li'nown in ihis arl' is discharged through the pipe us end coinlensate outlet lilting; also deseribml,above. The steam, in ulilii'ii'in to its 'luncl ion of heating the cylinder, is utilized to act on lhe sylphons and min-rotating hearing parts tol'ceeo the several hen 'ing parts in eoniaet to p re nt leakage of steam or other fluid at the joints. The objert, broadly, of oletainin a st sun controlled joint is; (lisolosed in our prior application's above mentioned but the application thereof in the present case is novel. in. this instance, the steam pressure or i on bolh the sylphons i0 and and the hearing parts 8 and. :22 in suel manner as to maintain the learing parls in steam izi 'ht contact regariilless of \uiriiuuions in the steam pressure Without, however, imposing undue pressure and coiuaequently 'lrie'l ion on such bearing parts at the higher pref-sures. it Will he appalront the 'e'l ore that the steam joint: are balanced and that any tllllfil fil 'lll lfill of the pipe us under the higher temper" turerr or d irqvlacmnent due to ciinitriu-l'ion or V pan sion of the pi pee 'l 5 and 25); 's (alien care of by expanding; or flexing of the sylphons. These sylphons likewise cnalifle the h raring parts to be respwsire-to the action of the steam or other inuu pressure and consequenliy allow for constant lilLO up d no to wear. lVilh this construciion and n-iueiple of operaiicui, steam tight joints will he n'inintaiineil over a remarlmhly long period as conipuriul with prior constructions Which-required constant core and attention and adjustment in order to prevent loss of steam, Another important aid ant-age of the present type o l construction is that the ii'rietion and eonsequenltwear on the joints is reinnrlcibly small with the result lhat the life of the joints is increased far beyond the prior practice.

lit should be expressly understood that the lorni steam used. in the ehiime neins any Llinid, and. that the invention deiinei. by he claims may be applied with such other fluids.

While we have illustrated but a single embodiment of our invention, it should be understood that changes might be made in the construction and arrangement without departing from the spirit and scope of the invention, as expressed in the appended claims.

W e claim:

1. In combination, a hollow rotary ournal, a steam supply fitting, a steam joint between said fitting and journal and a condensate outlet pipe holding said fitting in operative relation to said journal.

2. ln combination, a hollow rotary journal, a steam supply fitting seated against one end thereof, and, means including a condensate outlet pipe rotating with. the journal and serving to hold said fitting in operative relation thereto.

3. In combination, a hollow rotary ournal,

a steam supply fitting seated against one end thereof, a condensate outlet pipe passing through the fitting and fixed to the journal, and. a sylphon action between said pipe and journal tor holding said fitting in operative relation to the journal.

4;. In comlnnation, a hollow rotary ournal, a steam supply fitting, a condensate outlet fitting, and a condensate out-let pipe discharging into the condensate outlet fitting and holding said steam supply fitting in operative relation to the rotary journal.

5. A combined steam supply fitting and a condensate outlet fitting tor a hell w rotary journal both maintained in operative relation to the journal by a condensate outlet pipe connected to the journal.

6. In combination with a steam fitting for application to the end of a hollow rotating journal, a condensate outlet fitting, and a condensate outlet pipe secured to the journal and serving to hold the steam fitting against the journal.

7. In combination with a steam fitting for application to the end of a hollow rotating journal, a condensate outlet fitting, a steam joint between the steam fitting and the ournal including a yieldable bearing part backed by a sylphon, and a condensate outlet pipe secured to the journal and serving to hold the steam fitting against the hollow journal.

8. In combination, a hollow rotating journal, a steam fitting having a steam joint bearing against the journal, one part of which joint is backed by a sylphon, and a condensate outlet fitting applied to the end oi the steam fitting remote from the journal and l'iaving a steam joint including a bearing part backed by a sylphon and having also a condensate outlet pipe holding the steam fitting against the hollow ournal.

9. In combination, a hollow rotary journal, a steam supply fitting, a condensate outlet fitting, a steam joint between the journal and steam supply fitting, a partition separating the interior of the steam supply fitting and the condensate outlet fitting including a con densate outlet pipe extending through the steam supply fitting and attached to the journal and including also a steam joint within the condensate outlet fitting between a nonrotating part and a part rotating with said pipe, each of said steam joints including a yieldable bearing part and a sylphon backing such part.

10. In combination, a hollow rotary journal, a steam supply fitting having a sylphon attached to each end and a steam inlet intermediate its ends, a steam joint between one sylphon and the journal, a second steam joint including a rotating and a non-rotating part, the latter of which is attached to the other sylphon, and means extending through the steam fitting connecting the rotating part of said steam joint to the rotating journal and serving to hold the steam fitting in operative relation to the said journal.

11. In combination, a hollow rotary journal, a steam supply fitting having a sylphon attached to each end and a steam inlet intermediate its ends, a steam joint between one sylphon and the journal, :1 second steam oint including a rotating and a non-rotating part, the latter of which is attached to the other sylphon, means extending through the steam fitting connecting the rotating part of said steam joint to the rotating journal and serving to hold the steam fitting in operative relation to the said journal, and a condensate outlet housing embracing the second mentioned steam joint and attached to the steam supply fitting, said means comprising a condensate outlet )ipe discharging into said condensate outlet. iousing.

12. The combination oi a hollow rotary journal, a steam supply fitting, the delivery end of which has a bearing part seating against the end oi? the journal, at condensate outlet fitting attached to the end of the steam fitting remote from the journal, a condensate pipe attached to the journal extending through the steam fitting and equipped within the condensate fitting with a bearing part forming part of a partition between the condensate fitting and the steam fitting, and means forming the remainder of said partition including a bearing part seated against the bearing part on the condensate pipe, and a. sylphon acting between the steam fitting and the third mentioned bearing part and serving to seat the latter.

13. In combination, a steam fitting for ap plication to the end of a hollow rotating journal, a steam joint between the journal and steam fitting including a yieldable part backed by a sylphon, a condensate outlet fitting associated with the end of the steam sup ly fitting remote from the journal incluc ing a steam joint having a rotating and a non-rotating part, a sylphen backing the non-rotating part and acting between it and the steam supply fitting, and a condensate outlet pipe connecting the rotating hearing part and the journal. t

id. A steam fitting; :lfor aj'iplicatiou to the cod of a hollow rotating: journal including: a conduit having a sylphon attached to each end thcrcot and a steam iulct lietn'ecn said ends, astoani joint hetwcen one end of said conduit and the hollow rotating ji'iurnal :in eluding; a non-rotating part hacked by the .aylphon, a part extcndiiu througzgh sai d conduit and secured at one end to the journal and equipped at its opposite end Witl a hearing); part and a steam joint hetwccn said licai'iug' part and the opposite end o i said conduit including a uoiio'otathin hearing part hacloul hy the syl iihon on the adjacent end oi the conduit.

15. in cou'ihiuatioin a rotating and a nonrotating eoiuluit and means including; a sylphon and a part secured to tho rot atioo; con duit and extending through the non-rotating conduit and Hfitll'ifj through the sylphon to hold the non-rotating); conduit seated against the i'i'itatiim conduit.

in. In conihinatiou, a hollow ]'(')l12ttl1] conduit a hollow owl-rotating conduit seated against said rotating conduit, and means holding said non-rotating); conduit a g'ainot said rotating); conduit to maintain a fluidtight joint therohotween comprising a part extcndii'ig through the non-rotating conduit and secured to the rotating conduit, and a fluid-tight joint hetwoon said part and the nou-rotating conduit including a liiearing part hacked by a aylphon.

17; In conihiuut ion, a hollow rotating; journal, a non-rotating conduit adapted to seat against one end of the ouruah means pa: 'ng throu ogh tho conduit and secured to the journal for holding the conduit in operative relation thereto; a tiuid-tiggjht joint lictn'eon the conduit and, journal and another licl'wecu the conduit and said n'ioano, each pointincludii'ig a part hacked. hy a sylpl'ioi'i.

18. In con'ihiuation, a hollow rotating journal, a steam supply fitting for application to the end of said journal, a condensate outlet til ing attached to said steam supply fitting, the means separating the interior ol. said litin gs con'ipriaing a condensate outlet pipe extending through the steam supply fitting and secured to the journal, and a steam joint in eluding" a rotating liiearing part fixed to the pipe and a non-rotating hearing part backed by a syl ph on ll). in comhhmtion with a hollow rotating); conduit a hearing; disk seated against the end of the conduit, a non-rotating hearing part seatwl against said dish, a sylphon attached to said non-rotating liiearing part, a non-irotatino conduit attached at one end to said nylphon, a sylphon attzuzhedfto the opposite cud o'l. oaid non-rotating conduit, a second ium-rotating hearing partattached to the opposite end of the second mentioned sylphon, a hearing disk against which the latter nonrotatingg; hearing part seats, a rotatiru; heariun; part against which the last mentioned hearing dink seats, and means securing the last mentioned rotating hearing part to the rotat ng; conduit.

20. The combination set forth in claim. 19 in which said means extends through the nonrotating conduit.

21. The combination set forth in claim l9 in which said non-rotating conduit is a steam supply conduit and said means is a eondensate outlet pipe extending through the oteam supply conduit.

The comhinationset forth in claim 19 includingmeans for elt'ccting axial adjustinontoi? the last mentioned rotatingg'hearing part With reopeet to the rotating conduit.

23. The combination set forth in claim 19 in which said non -rotatin g5 conduit is a steam supply conduit and said means is a condensate outlet pipe omen din g through the steam supply conduit and including a housing onclosing the steam joint and. sylphon atthe end ol the nonwotatinu conduit remote from the rotating; conduit into which housing; the condensate pipe (llSCl'litl'QQS.

JJJONZO ALDRICI EARL E. BERRY. 

